Pilot Operated Check Valves

PILOT OPERATED CHECK VALVES

Pilot check on the blind end of the cylinder with a load retracting the cylinder rod. SUN three port pilot-to-open check cartridges are non-modulating, on/off devices that allow free flow through a check valve from port 2 (inlet) to port 1 (load) and then block reverse flow until a pilot pressure directly proportional to the load pressure is sensed at port 3 (pilot) so that a pilot piston can push the check poppet off its seat.